using System;
using System.Globalization;
using System.Windows;
using System.Windows.Data;

namespace SMSManager.WpfClient.ValueConverters
{
	[ValueConversion(typeof (string), typeof (Visibility))]
	public class LoginMsgConverter : IValueConverter
	{
		/// <summary>
		/// 	Converts a value.
		/// </summary>
		/// <returns>
		/// 	A converted value. If the method returns null, the valid null value is used.
		/// </returns>
		/// <param name = "value">The value produced by the binding source.</param>
		/// <param name = "targetType">The type of the binding target property.</param>
		/// <param name = "parameter">The converter parameter to use.</param>
		/// <param name = "culture">The culture to use in the converter.</param>
		public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
		{
			var str = (string) value;
			if (str == "")
			{
				return Visibility.Collapsed;
			}
			return Visibility.Visible;
		}

		/// <summary>
		/// 	Converts a value.
		/// </summary>
		/// <param name = "value">The value that is produced by the binding target.</param>
		/// <param name = "targetType">The type to convert to.</param>
		/// <param name = "parameter">The converter parameter to use.</param>
		/// <param name = "culture">The culture to use in the converter.</param>
		/// <returns>
		/// 	A converted value. If the method returns null, the valid null value is used.
		/// </returns>
		public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
		{
			throw new NotSupportedException();
		}
	}
}